Electric regulation.



. J. GREVELING.

BLEUTRIG REGULATION.

APPLICATION I'ILED JUN B 10, 1911.

, Patented Nov. 7,1911.

INVENTOR WITNESSES UNITED STATES r ATENT oFFIoE.

JOHN L. GREVELING, OF NEW YORK, N. Y., ASSIGNOR '10 SAFETY CAR HEATING AND LIGHTING COMPANY, A CORPORATION OF NEW JERSEY.

ELECTRIC REGULATION.

Specification of Letters Patent.

Patented Nov. 7, 1911.

Original application filed November 21, 1910, Serial No. 593,319. Divided and this application filed June To all whom it may concern:

Be it known that" I, JOHN L. CREVELING, a'resident of the city, county, and State of New York, have invented certain new and useful Improvements in Electric Regulation, as set forth in the annexed specification and drawing, forming a part thereof.

My invention pertains to that class of electric regulation wherein it is desired to automatically regulate a dynamo or generator in a predetermined manner.

My invention has for its particular object to provide means whereby a dynamo or generator may be automatically governed or controlled in such manner as to properly charge a storage battery and operate lamps or translating devices.

This application is a division of my application for improvement in electric regulation, No. 593,319, filed November 21, 1910.

The drawing is a diagrammatic representation of one type of system embodying the essentials of my invention.

In the drawing, 1 represents a dynamo or generator provided with the usual field coil 2 having in series therewith a regulating element in this instance indicated as a carbon pile 3.

4 represents the positive lead of the generator which is connected with one side of the storage battery 5 and one side of the lamps or other translating devices indicated at 6. The remaining terminals of the translating devices are carried to the lead 7 which connects with the negative brush of the generator. The negative side of the storage battery 5 is connected with the lead 7 through the coil 8. The coil 8 surrounds the core '9 of magnetic material, in such manner that when energized, it tends to draw the same in a downward direction. The core 9 is carried by the bell crank lever 10, normally drawn in an upward direction as by the adjustable spring 11 in such man ner as to tend to compress the carbon pile 3 and lower the resistance thereof.

12 is a coil of fine wire surrounding the core 9 and having one of its ends connected with the lead 7 as by wire 13 and the other end connected as by wire 1 1 with the switch contactl5. v

16 is a coarse wire carried from a point in the wire connecting the battery 5 with the lead 7 between theilead 7 and the coil Serial No. 632,480+}.

8 to the switch contact 17. Switch contact 19 is connected with the wire connecting the battery 5 with the lead 7.at a point between the battery 5 and the coil 8.

18 is a switch contact connected with the lead at through the resistance 27.

20 is an armature provided with contacts 21 and 22 electrically insulated from each other and normally drawnin a downward direction against the adjustable stop 24 as by adjustable spring 25. The contacts 21 and 22 are so arranged that when lever 20'is raised they will cause electrical communication between 15 and 18 and between 17 and 19.

26 is an ele'ctro-magnet in shunt to the battery 5, which, when energized, tends to" lift the lever 20.

27 is an adjustable resistance in series with the circuit containing the coil 12' whereby the current in said coil may be adjusted.

The operation of my invention when embodied in a system as herein shown for illustration is substantially as follows Starting with the generator charging the batteries which we will consider as below their normal voltage, current will flow from the generator, through the field 2 and carbon pile 3 in a well known manner and the voltage of the generator will depend upon the resistance of the carbon pile 3. Current will flow from the generator through lead 4, storage battery 5 coil 8 and translating devices 6 if they be in circuit and return to the generator through lead 7. I now so adjust the spring 11 that when the maximum current desired to have furnished to the battery by the generator is reached, the coil 8 will cause the core 9 to be drawn downwardly so as to increase the resistance 3 and thus regulate the generator voltage so that this maximum current will not be exceeded. It now, the generator continue to supply this current and thus charge the battery, the voltage upon the battery will gradually rise. This will cause a rise in current in the magnet 26 inasmuchv as the same is in shunt across the circuit and I so adjust the spring 25 that whenthe maximum desired voltage across the battery, for example substantially its fully charged voltage, be'reached, the coil 26 will lift the armature 20 against the action of spring25 its 20 I have produced a system wherein the storage batteries may be automatically charged at and close the contacts 15, 21, 18, and 17, 22, 19. This will shunt out the current regulating coil 8 and throw the voltage regulating coil 12 in circuit across the battery and generator. I now so adjust the adjustable resistance 27 that the current in the voltage coil 12, with the maximum desired voltage across the line will cause the coil 12 to exert a substantially equal'pull -upon the core9 as did the coil 8 when the a constant rate or under current control un til a certain desired voltage is reached, when the current controlling feature is suppressed or rendered inoperative and the regulator becomes a voltage regulator charging the batteries on a constant voltage circuit.

I do not wish in any way'to limit myself to the exact details of thesystem shown in the drawing submitted herewith as a mere diagrammatic representation of one type of system embodying my invention nor to the exact mode of operation outlined as a description of this diagrammatic system used for illustration merely, as it will be plain that Wide departure in the waylpf details of construction and operation may be made without departing from the scope pf my in vention, which is as set forth inttlle following claims:- i

l. The combination with a gene ator andv a storage battery'in circuit therewith, of a regulatorresponsive to fluctuations in current in the battery circuit; means for rendering said regulator responsive to fluctuations in voltage across the battery circuitand unresponsive to current changes in the battery circuit.

2. The combination with a generator and a storage battery in circuit therewith, of a regulator responsive to fluctuations in current in the battery circuit, means for rendering said regulator responsive to fluctuations in voltage across the battery circuit, and unresponsive to current changes in the battery circuit, and means for operating the first mentioned means responsive to voltage changes across the battery.

3. The combination with a generator, a supply circuit and a storage battery, of

.means for regulating the generator, comprising means responsive to current changes through the. battery, means responsive to voltage changes, and automatic means for selecting which of said operating means shall be operative.

4. The combination with a generator, a supply circuit and a storage battery, of means for regulating the generator comprising means responsive to changes in current through said battery, means responsive to voltage changes, and automatic means for determining which of said responsive means shall control saidregulating means.

5 The combination with a source of electromotive force, a supply circuit and a storage battery, of means for regulating said electromotive force, current operated means for controlling the'regulating means responsive to fluctuations in current through the battery, voltage responsive means for controlling the regulating means, and automatic means for controlling the current in both of said operating means.

6. The combination with a source of electromotive force, a supply circuit and a storage battery, of means for regulating .said electromotive force, current actuated means for controlling the regulating means responsive to the storage battery current, voltage operated means for controlling said regulating means, and voltage operated means for determining which of said controlling means governs said electromotive force.

7 The combination with asource of electromotive force, a storage battery and a supply circuit, of'means for regulating said electromotive force, operating means for said regulating means responsive to fluctuations in current through the battery, operating means for said regulating means responsive to voltage fluctuations, and automatic means for determining which of said operating means shall predominate in the.

regulation of said electromotive force upon tendencies of the same to vary. v

8.. The combination with a source of electromotive force, a storage battery and a supply circuit, of means for regulating said electromotive force, operating means for said regulating means responsive to fluctuations in current through the battery, operating means for said regulating means responsive to voltage fluctuations, and voltage operated means for determining which of said operating'means shall predominate in the regulation of said electromotive force upon tendencies of the same to vary.

9. The combination with a source of electromotive force, a supply circuit and storage battery, of means for regulating said electromotive force comprehending controlling means affected by current-flowing through said battery and controlling means responsive to voltage'fluctuations, and automatic means for determining which of said controlling means shall predominate in efl'ecting the regulation of said electromotive force upon tendencies of the same to vary.

tion of the generator upon variations in the operation thereof.

11. The combination with a source of electroniotive force, a supply circuit and storage battery, of means for regulating said electromotive force responsive to a coil in shunt to the supply circuit and a coil. in series with the battery and automatic means for controlling the operative relation of both coils w'th respect to each other. 7 12. The combination with a source of electromot-ive force, a supply circuit and a storage battery, of means for effecting battery current regulation of said electromotive force, means for efiecting voltage regulation of said electromotive force, and supplemental means for automatically determining which of said before mentioned means shall regulate said electromotive force.

13. The combination with a generator, a supply circuit, a storage battery and a translation circuit, of means for regulating the generator comprehending regulation afiecting means responsive to fluctuations in current through the battery independently of the translation circuit, regulation aiiecting means responsive to voltage fluctuations, and means for determining which of said regulation affecting means shall eiiect the regulation of the generator throughout changes in the operation thereof.

' JOHN L. CREVELING. Witnesses:

ANNA MARIE WALL, MABEL E. HILLOOK.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, I). C. i 

